Sharp MZ

Looks like stock 821's go for around 150 euros on eBay. I have no idea what the QD is worth though. To me - not very much I'm afraid. Interesting technology but not very practical today. Where are you located?

Does anybody have an 800 for sale for a reasonable price?

That's something I wanted to do with my existing project (mz-sd²cmt) but the AVR is not fast enough to handle memory bus unless you plan to use /halt, /busreq/ack or /wait to take the full control when needed. True, a faster microcontroller is needed. Something ARM-based, like the Teensy series, wo...

I have removed the 1500 compatibility flag on all downloads in the database except for those where 1500-compatibility was explicitly mentioned in the description.

The original sharpmz.org will not be updated, it's basically a snapshot of the site before the transition to Wordpress started and should only be considered as a historical document. KHM does not maintain those pages anymore and has not had access to this site for more than a year. The MZ-1500 page ...

Yes, my imaginary tape emulator has that.

If I don't patch the BASIC monitor it will use the normal tapeport, which the tapeemulator also supports. So in that case it will work at normal speed.

Oh I see what you mean. So do want you to patch the tape routines of the monitor (through a patched copy in DRAM) and make them to use the expansion port to read/write a header/data blocks? Virtual Instantaneous Tape? Yes, something like that. I'm aware of the BASIC monitor, that one would have to ...

The point is to avoid the current bit-banged serial tapeport, and transfer data directly on the databus to a microcontroller-based tape-emulator connected to the expansion port. This should allow almost instant loading and saving to "tape".

I ask because it would be rather trivial to modify the monitor tape routines to just read/write bytes through a port instead of bit-banging the tape port. It would require some custom hardware (tape emulator connected to the expansion port) but would also be super fast. But not much point in doing t...